Wrench.



E. OHLSSON.

WRENCH.

APPLIoATIoN Hum 00T. 30,1901.

91 3,302. Patented Feb. 23, 1909.

UNITED srarins PATENT oEErcE.

ELOF OHLSSON, OF NEW YORK, N. Y.

WRENCH.

To all whom it' may concern:

Be it known that I, ELor OHLssoN, a subject of the King of Sweden, and a resident of New York,.county and State of New York, have invented certain new and useful Improvements in lVrenches, of which the following is a full, clear, and exact description.

This invention relates more particularly to a wrench for pipes and other round objects, and the primary object thereof is to provide a simple, e'ective, and strong device, which may be quickly adjusted to lit the objects of different diameters without the use of a nut or screw, and which once adjusted will positively hold the object to be moved in such a Way that the movable parts of the wrench will be subjected to a minimum amount of strain.

A further object of the invention is to provide a wrench which may be cheaply manufactured, and which may be used for various purposes.

wWith these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawings, Figure 1 is a vertical section, partly in elevation, of one form of wrench embodying my invention. Fig. 2 is a fragmentary plan view; and Fig. 8 is a detail end view of the rocking member and guide for the movable jaw.

The handle 10 may be of any suitable construction, and may be provided at its outer or forward end with the usual fixed jaw 11 which has a serrated edge for gripping the body to be operated on. A rocking member 12 has a yoke 'portion 18 in the form of two brackets, which are adapted to span the body portion of the handle member 10, and is pivotally held to said member by a bolt 14. The rocking member 12 has a dog 15 formed integral therewith, or fixed between the side portions of t-he rocking member, and said dog has one or more teeth 16, which is ada ted to engage teeth 17 on the inner face o the movable member 18. This member 18 is sldingly held in an elongated opening in the rocking member 12, and has a bolt or pin 19 at one end thereof to limit the outward movement of said member and prevent it from being entirely released from the rocking member, and on the forward or Sp eccation of Letters Patent.

Application filed October 30, 1907.

Patented Feb. 23, 1909.

Serial No. 399,793.

outer end of said member is the usual movable jaw 20, which may be formed integral with said member, and which may have the usual gripping' teeth 2l, so that the pipe or other body may be rigidly and properly held between the two jaws. The opening through which the member 18 passes lies in the same plane as the handle member and is extended somewhat above the movable member 18. and said opening is closed by an inclined part 22. Secured tothe part 22 is a spring 28, which has one end projecting within the elongated opening to engage the upper surface of the member 18, and said spring normally forces said member toward the handle member 10, so as to cause the teeth 17 to engage the dog 15, thereby preventing further lengthwise adjustment of the movable member. It will be seen that the member 18 may be released from the dog by simply raising the inner end of said member against the pressure of the spring 28, so as to release the dog 15 from the teeth 17, at which time the jaw of said movable member may be quickly adjusted, either toward or away from the jaw of the handle member.

To assist in strengthening the wrench to take the strain, in a measure, from the pivot of the rocking member, provide inclined sides or surfaces 24 and 25 formed as a part of the dog 15, or they may be independent thereof and carried by the rocking member. As the object is gripped by the jaws, the rocking member will swing on its pivot, and either surface 2st and 25 will hrest upon the inner edge 2G of the handle member according to which direction the wrench is operated, thereby causing the strain to be shifted from the pivot to the body of the rocking` member and the handle 10.

The wrench is shown in a position ready for adjustment, and by lifting the member 18 so that it may be disengaged from the tooth of the dog 15, the said member may be adjusted to the size of the object to be operated on, and as soon as released the spring 23 will again force it into engagement with the dog. As the handle is opel'- ated the fixed jaw will cause the member 12 to rock on its pivot and cause either sur face 24 or to rest upon the upper edge 2G ofthe handle member 10, so as to properly distribute the strain and prevent further movement of one jaw relatively to that of the other.

From the foregoing it will be readily seen that a simple and ethcient Wrench is provided, which is adapted to have the movable jaiv quickly and readily adjusted With respect to the iXed jaw Without interfering in any ivay ivith other parts of the wrench and without employing the usual screw or nut; that the ivrench may be cheaply made and a sembled; and that i case ot injury the injured part may be readily replaced iv' hout attecting the other parts ot the Wrench.

VHaving thus described my invention, 1 claim as nevv and desire to secure by Letters Patent 1. )t viench comprising a handle member having a tired jaw, a rocking mer .ber pivoted to the handle member adjacent to the iiXed avc, a dog carried by the rocking member and having singularly disposed inner surtaces adapted to engage the inner ot the handle member, a mo"able member having a jaiv at one end slidingly held in the 'oel ing men'iber and provided with teeth da ted to be. engaged by the dog, and a spri g carried by the rocking men'iber and normally forcing the movable men'iben iniva o so as to be engaged by the dog.

i pipe Wrench comprising a handle membe avmg a fixed jaiv at one end thereot', a roeaing member provided ivith brackets which span the handle member adjacent to the lined jaiv, a bolt for pivotally holding the rocking member to the handle member, said rocking member being provided 'with an elongated opening in the plane ot' the handle member, a movable member slidingly held in the opening or" the roclring member and provided ivith teeth on its inner edge, a spring having its end projecting Within the opening of the rocking member and normally orcing the movable member toward the handle member, a dog having a single tooth normally engaging the teeth of the movable member and having its under surface inclined at an angle so as to extend in opposite directions and adapted to engage and rest npon the inner edge oit' the handle member, said movable member being adapted to be disengaged from the dog by movement against the pressure exerted by thesprine, and a pin carried by one end of the movable member and adapted to engage the rockin@- member to limit the outvvard movement or the movable member.

3. A pipe Wrench comprising a handle member having a iixed jan7 at one end thereot', a rocking member pivoter to the handle adjacent to the fixed javv, said rocking member being provided with an elongated opening in the plane of the handle member, a movable member slidingly held in the opening of the rocking member and provided With teeth on its inner edge, a spring having a free end projecting Within the opening of the rocking member and normally forcing the movable member toward the handle member, a dog normally engaging the teeth ot the movable member and having its under surface inclined at an angle so as to extend in opposite directions and adapted to engage and rest upon the inner of the handle member. e

e. A vrench comprising a handle member having a tlxed jaw at one end thereof, a roel-ting member pivoted to the handle adjacent to the lined javv, said rocking member being provided ivith an opening in the plane of the handle member', a movable member slidingly held in the opening of the rocking member and provided with teeth on its inner edge, a spring having one endprojee/tine' Within the opening ot the rocking member and normally forcing the movable member toivard the handle member, a dog having a tooth normally engaging the teeth ot the movable member and having its under surface inclined at an angle so as to extend in opposite d'rections and adapted to engage and rest upon the inner edge of the handle member, said movable member being adapted to be disengaged from the dog by movement against the pressure exerted by the spring, and means carried by one end of the movable member adapted to engage the rocking men'iber to limit the outward movement of said movable member.

5. a pipe Wrench comprising a handle member h ving a fixed jaiv at one end iereof, a rocking member provided with le brackets Which span the handle adjacent to the med jaw, a bolt for pivotally ho ding the rocking member to the handle member, said rocking member' being provided ivith an elongated opening in the plane ot the handle member, a movable member slidably held in the opening of the rocking member and provided with teeth on its inner edge, a spring held to the rocking member and having one end projecting Within the opening of said rocking member and normally forcing the movable member toivard the handle member, and a dog having a single tooth normally engaging the teeth of the movable member and having its under surface inclined at an angle so as to extend in opposite directions and adapted to engage and rest upon the inner edge of the handle member, said movable member being adapted to be disengaged from the dog by movem nt against the pressure eX- erted by the spring.

1" his specification signed and witnessed this 26th day ot October A. D. 1907.

ELOF OHLSSGN.

Tlilitnesses Amrum: HAROLD HOWELL, MATILDA H. HOWELL. 

